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This specification contains performance requirements for a two-component, weatherable polyurea topcoat. The coating may be fast or moderately fast drying.
Coatings meeting the requirements of this specification are generally suitable for exposures in Environmental Zones 1A (interior, normally dry), 1B (exterior, normally dry), 2A (frequently wet by fresh water, excluding immersion), and 2B (frequently wet by salt water, excluding immersion). Resistance of polyurea topcoats in Environmental Zones 3B (chemical exposure, neutral) and 3C (chemical exposure, alkaline) can vary based upon formulation. The coating manufacturer should be contacted for specific chemical resistance data if required.
The specified coating is intended for application by single-component airless spray, electrostatic spray, or plural-component equipment, depending upon its formulation.
This coating is intended for use as a topcoat over suitably primed ferrous metal and cementitious substrates.